Agios Ioannis Peristeron, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Agios Ioannis Peristeron, Ionian Islands, Greece, is known for its luxurious resorts like the Marbella Corfu Hotel and its beautiful beaches along the Ionian Sea. The best time to travel to Agios Ioannis Peristeron, Greece, is from late May to early October, with average air temperatures around 75-85°F (24-29°C) and water temperatures around 73-79°F (23-26°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!